/**
主要回顾：switch 语句。
*/

import java.util.*;

class LearnSwitch{
    public static void main(String[] args){
        System.out.println("请输入一个月份：");
        
        Scanner scanner = new Scanner(System.in);
        int month = scanner.nextInt();	//读取键盘输入
        
        switch(month){
            case 3:
            case 4:
            case 5:
                System.out.println("春天");
                break;
            case 6:
            case 7:
            case 8:
                System.out.println("夏天");
                break;
            case 9:
            case 10:
            case 11:
                System.out.println("秋天");
                break;
            case 12:
            case 1:
            case 2:
                System.out.println("冬天");
                break;
        }
    }
}